/*
 * Copyright (c) 2009-2011, EzWare
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.Redistributions
 * in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.Neither the name of the
 * EzWare nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

package org.oxbow.swingbits.util;

/**
 * Utility class to allow OS determination
 *
 * Created on Mar 11, 2010
 * @author Eugene Ryzhikov
 *
 */
public enum OperatingSystem {

    WINDOWS( "windows" ),
    MACOS( "mac" ),
    LINUX( "linux" ),
    UNIX( "nix" ),
    SOLARIS( "solaris" ),
    
    UNKNOWN( "unknown" ) {
        @Override protected boolean isReal() { return false; }
    };


    private String tag;

    OperatingSystem( String tag ) {
        this.tag = tag;
    }

    public boolean isCurrent() {
        return isReal() && getName().toLowerCase().indexOf(tag) >=0;
    }

    public static final String getName() {
        return System.getProperty("os.name");
    }

    public static final String getVersion() {
        return System.getProperty("os.version");
    }

    public static final String getArchitecture() {
        return System.getProperty("os.arch");
    }

    @Override
    public final String toString() {
        return String.format("%s v%s (%s)", getName(), getVersion(), getArchitecture() );
    }
    
    protected boolean isReal() {
        return true;
    }

    /**
     * Returns current operating system
     * @return current operating system or UNKNOWN if not found
     */
    public static final OperatingSystem getCurrent() {

        for( OperatingSystem os: OperatingSystem.values() ) {
            if ( os.isCurrent() ) return os;
        }
        return UNKNOWN;
    }

}